[U-Boot] Regression in U-boot v2019-07-rcX
andriy.shevchenko at linux.intel.com
Wed Jun 12 13:49:01 UTC 2019
On Wed, Jun 12, 2019 at 04:23:37PM +0300, Andy Shevchenko wrote:
> On Wed, Jun 12, 2019 at 04:18:25PM +0300, Andy Shevchenko wrote:
> > Hi!
> > I have noticed today the regression in newer U-Boot.
> > For now I'm not sure which version is affected first. At least v2019.07-rc4
> > behaves badly.
> > Under badly I mean the following. Consider the output at the boot time:
> > U-Boot 2019.07-rc4-00012-gcea7942d57 (Jun 12 2019 - 16:08:09 +0300)
> > CPU: Intel(R) Atom(TM) CPU U1000 @ 500MHz
> > DRAM: 980.6 MiB
> > MMC: mmc at ff3fc000: 0, mmc at ff3fa000: 1
> > Loading Environment from MMC... OK
> > In: serial
> > Out: serial
> > Err: serial
> > Net: No ethernet found.
> > Hit any key to stop autoboot: 0
> > Note lines started with DRAM: and MMC:. Now the 4 seconds (!) time is passed
> > between them.
> > On top of that DFU seems twice slower (on the glance, I haven't measure with
> > `time` yet).
> > Any ideas, while I'll try to allocate some time to investigate myself?
> > P.S. The board I'm testing with is Intel Edison. I think no need to tell that
> > nothing has been changed except the base (I'm rebased my stuff on top of latest
> > and greatest U-Boot releases).
> v2019.07-rc1 is NOT affected!
> The time difference with DFU:
> -rc1: real 0m1.114s
> -rc4: real 0m2.691s
The culprit commit is:
Author: Simon Glass <sjg at chromium.org>
Date: Thu Apr 25 21:59:06 2019 -0600
x86: Don't set up MTRRs in SPL
Please revert ASAP before release, thanks!
With Best Regards,
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